<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<link rel="stylesheet" href="my.css" />
		<style>
			.red{
				color: red;
			}
			.underline{
				text-decoration: underline;
			}
			.bigFont{
				font-size: 50px;
			}
		</style>
	</head>
	<body>
	<p class="red bigFont">段落1</p>
	<p class="underline red">段落2</p>
	<p class="bigFont underline">段落3</p>
	</body>
</html>
